The best HEAP in Anion air purifier

HEAP which is short for High efficiency particulate air Filter. always use together with air cleaner.
The characteristic of HEPA net is fresh air can pass, but cannot pass tiny particles.
It to a diameter of more than 0.3 microns in diameter of 1/200 (hair) particle removal efficiency can reach more than 99.97%, is the most effective pollutants such as smoke, dust and bacteria filter medium.
Put HEAP in Anion air purifier let you enjoy the comfortable breathing.